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Artículo
The settling of fine cohesive powders
(IOP Publishing Ltd., 2001-05-01)
We investigate the settling of an initially fluidized bed of a fine cohesive powder. Experimental results on the sedimentation rate cannot be fitted by theoretical and empirical equations existing in the literature and ...
Artículo
Left-handed-media simulation and transmission of EM waves in subwavelength split-ring-resonator-loaded metallic waveguides
(American Physical Society, 2002-10-28)
At microwave frequencies, hollow metallic waveguides behave in certain aspects as a “one-dimensional plasma.” This feature will be advantageously used for simulating the propagation of electromagnetic (EM) waves in left-handed ...
Artículo
Granular avalanches: Deterministic, correlated and decorrelated dynamics
(IOP Publishing Ltd., 2004-12-15)
A statistical analysis of granular avalanches in a half-filled and slowly rotated drum is presented. For large-sized grains the classical coherent oscillation is reproduced, i.e. we observe a quasi-periodic succession of ...
Artículo
Near-field enhanced imaging by a magnetized ferrite slab
(American Institute of Physics, 2005)
This letter demonstrates the near-field imaging enhancement at microwave frequencies of two-dimensional sources by a ferrite slab magnetized to saturation. It is shown that this effect is based on the nonreciprocal ...
Artículo
Numerical analysis of the stability of the Electrohydrodynamic (EHD) electroconvection between two plates
(IOP Publishing, 2008)
The time evolution of the problem of Electrohydrodynamic (EHD) convection in a liquid between two plates is analysed numerically. The equations are nondimensionalized using the ion drift velocity and the viscous time ...
Artículo
Instability of an interface between air and a low conducting liquid subjected to charge injection
(American Institute of Physics, 2006)
We study the linear stability of an interface between air and a low conducting liquid in the presence of unipolar injection of charge. As a consequence of charge injection, a volume charge density builds up in the air gap ...
Artículo
Modeling the electrophoretic deposition of colloidal particles
(IOP Publishing Ltd., 2001)
This letter presents the results of numerical simulations of the buildup of a layer of colloidal particles on an electrode. In a low-frequency electric field, particles suspended in a low-conductivity liquid migrate to one ...
Artículo
Dynamics of EHD Laminar Plumes: scaling analysis and integral model
(AIP Publishing, 2000)
In this paper electrohydrodynamic (EHD) plumes are examined in the region far from the injecting electrode and the collector plate, for both two-dimensional and axisymmetric geometries. The relative importance of the ...
Artículo
Babinet principle applied to the design of metasurfaces and metamaterials
(American Physical Society, 2004-11-05)
The electromagnetic theory of diffraction and the Babinet principle are applied to the design of artificial metasurfaces and metamaterials. A new particle, the complementary split rings resonator, is proposed for the design ...
Artículo
Artificial magnetic metamaterial design by using spiral resonators
(American Physical Society, 2004)
A metallic planar particle, that will be called spiral resonator (SR), is introduced as a useful artificial atom for artificial magnetic media design and fabrication. A simple theoretical model which provides the most ...